Welltech WG26xx Series V.1.08a - Manual (Page 19)

26xx Technical Manual EN-V108
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3.2.1.2 WAN Setting --DHCP
1. Press the “Apply” button (at the bottom) after you finish to save changes.
2. Press the “Reboot” button to apply the changes.
P.S. When you are using DHCP in WAN and WAN’s Ethernet cable are not
connected, you will not able to access Wellgate by using WAN port if you
don’t know the DHCP IP address. In this case, please connect to LAN
port and access it.